Abstract: The present disclosure generally relates to a device having a capacitance sensor that detects a change in capacitance that occurs in the antenna whenever the antenna is in close proximity to a user's hand and/or head. Following detection of the capacitance change, the capacitance of the antenna may be changed by using a variable capacitor that is coupled to the sensor through a controller.

Abstract: Disclosed are exemplary embodiments of a low profile wideband and/or multiband omnidirectional antennas. In an exemplary embodiment, an antenna generally includes a radiator and a ground plane. The ground plane may include a slanted surface along or defining an edge portion of the ground plane. The slanted surface may be configured to be operable for reducing null at azimuth plane to thereby allow the antenna to have more omnidirectional radiation patterns for the azimuth plane. In another exemplary embodiment, an antenna generally includes a substrate, a radiator along the substrate, and electrically-conductive tape or foil defining at least part of a ground plane. The electrically-conductive tape or foil is coupled to a ground of the radiator via proximity coupling and electrically insulated by masking of the substrate.

Abstract: According to the invention there is provided a dipole antenna array including at least one dipole antenna sub-array, wherein the dipole antenna sub-array includes a plurality of co-planar antenna units, each antenna unit including a pair of dipole radiating elements and a balun having an output line for providing output electrical signals to the pair of dipole radiating elements.

Abstract: A spacing member is positioned between a pair of antenna members. The two antenna members may be horizontally polarized or vertically polarized and positioned next to each other to provide an increased gain. The spacing element may be placed between the antenna members and have a thickness corresponding to the characteristic impedance of the antenna transmission line. The characteristic impedance may be determined based on the width of the transmission line. The spacing member may be radio-frequency (RF) transparent and may adhere to either or both of the antenna elements. The spacing member may be implemented as a plastic double sided tape or a uniform piece of plastic having one or more adhesive layers.

Abstract: Disclosed is a mobile terminal, by which extensibility of an antenna pattern and radiation efficiency of an antenna can be increased. The present invention includes a display, a frame configured to support a back of the display, a first antenna to be provided to at least one side of a top portion and a bottom portion of the frame, a rear case to attach to a back of the frame, a second antenna provided to at least one of an inner side and an outer side of the rear case, and a third antenna configured in a beam shape to be attached to at least one of a right lateral side and a left lateral side of the frame, the third antenna configured to be electrically connected to either the first antenna or the second antenna.

Abstract: The disclosed embodiments include a housing of a handheld mobile device. The housing includes a ceramic layer forming a continuous outermost surface of the handheld mobile device, and an antenna layer adjacent to the ceramic layer. The antenna layer including conductive elements formed from a metal injection molded substrate, and an antenna break formed of non-conductive material electrically separating the conductive elements to collectively form an antenna of the handheld mobile device that is hidden by the ceramic layer from an exterior view of the handheld mobile device.

Abstract: An antenna system includes an antenna having a symmetric geometry with respect to first and second antenna feed ports associated therewith, and a hybrid antenna feed circuit coupled to the first and second antenna feed ports of the antenna. The hybrid antenna feed circuit is configured to receive first and second transmit signals and feed the first transmit signal to the first and second antenna feed ports in a balanced feed mode and feed the second transmit signal to the first and second antenna feed ports in an unbalanced mode in a concurrent fashion.

Abstract: In one embodiment, an antenna system is described. The antenna system includes a primary antenna on an aircraft. The primary antenna is mechanically steerable and has an asymmetric antenna beam pattern with a narrow beamwidth axis and a wide beamwidth axis at boresight. The antenna system also includes a secondary antenna on the aircraft, the secondary antenna including an array of antenna elements. The antenna system also includes an antenna selection system to control communication of a signal between the aircraft and a target satellite via the primary antenna and the secondary antenna. The antenna selection system switches communication of the signal from the primary antenna to the secondary antenna when an amount of interference with an adjacent satellite reaches a threshold due to the wide beamwidth axis of the asymmetric antenna beam pattern.

Abstract: Antenna arrays that provide directive radiation over multiple frequencies, multiple polarizations, and/or operate in modes that reduce unnecessary radiation into a nearby human body. The arrays are particularly adapted for use with handheld wireless devices, such as smartphones, tablets, and cellular phones.

Abstract: An antenna device for a vehicle, including a generating device for generating electromagnetic waves, a waveguide system for transmitting electromagnetic waves, the waveguide system including a plurality of waveguide set-ups. The waveguide set-ups each having an inlet for feeding in the generated electromagnetic waves, the waveguide set-ups each including a plurality of outlets connected to the respective inlet, in order to couple out the electromagnetic waves fed into the respective inlet. The plurality of respective outlets being connected to openings in a surface, from which the electromagnetic waves are able to radiate, so that the surface includes a plurality of regions, whose respective openings are connected to a separate inlet via a separate waveguide set-up.

Abstract: A wireless device can include an antenna element, a printed circuit board, an antenna feed, a conductive surface, and a conductive connector. The printed circuit board can have a ground plane. The antenna feed can be connected, at a first point, to the antenna element and to the ground plane. The conductive surface can be disposed substantially parallel to the ground plane. The conductive connector can be connected, at a second point, to the ground plane and to the conductive surface. A distance between the first point and the second point can be substantially equal to one quarter of a wavelength of an electromagnetic wave to be exploited by the wireless device. At all other points, the ground plane and the conductive surface can lack a conductive connection between the ground plane and the conductive surface.

Abstract: A microwave antenna is operated in a first operating state during an alignment operation for the microwave antenna system where the microwave antenna is configured to have a first beam width. Subsequent to the alignment operation, the microwave antenna is operated in a second operating state where the beam of the microwave antenna is configured to have a second beam width that is narrower than the first beam width.

Abstract: A cavity-backed slot antenna whose cavity has an artificial magnetic conductor (AMC) disposed therein, the AMC being loaded with active reactive elements. The active reactive elements are preferably formed by Non-Foster Circuits (NFCs).

Abstract: A mobile device with tri-band antennas incorporated into a metal back side thereof is provided. The device comprises: a back side comprising a face and opposing ends; an edge extending from the face: a conducting central portion; antennas located at the opposing ends, each of the antennas electrically separated from the conducting central portion, and each comprising: a first respective radiating arm located at least partially on the face, and at least two further respective radiating arms extending from the first respective radiating arm, the at least two further respective radiating arms located on the edge, the radiating arms configured to resonate in at least three frequency ranges; one or more antenna feeds connected to each of the antennas; and, a switch configured to select one or more of the antennas for operation.

Abstract: A waveguide structure for a compact and scalable dual-polarized antenna array. In one example, a waveguide device comprises septum polarizers dividing common waveguides into first waveguides associated with a first polarization and second waveguides associated with a second polarization. The sets of septum polarizers may be inverted relative to each other to form first groups of four adjacent first waveguides for each type of waveguide. The waveguide device may also include a waveguide feed network including a first waveguide feed stage including waveguide combiner/dividers coupled between the four adjacent waveguides intermediate waveguides. The waveguide device may further include a second waveguide feed stage coupled with the first intermediate waveguides and the second intermediate waveguides, wherein the second waveguide feed stage extends in a direction perpendicular to the first waveguide feed stage.

Abstract: An antenna device includes a main-reflector including a main-reflector hole, an additional main-reflector, a sub-reflector, and an additional sub-reflector. The main-reflector surrounds an outer edge of the additional main-reflector, and has a reflective surface on the same side as the additional main-reflector. The sub-reflector faces the main-reflector hole on the reflective surface side of the additional main-reflector, and has a reflective surface facing the reflective surface of the additional main-reflector. The additional sub-reflector surrounds an outer edge of the sub-reflector, and has a reflective surface on the same side as the sub-reflector.

Abstract: An antenna, including, but not limited to, a multiple input multiple output antenna is provided. The antenna may include, but is not limited to, a transmission array configured to radiate in a first frequency range, the transmission array including a plurality of dipoles, and an isolator located between the plurality of dipoles of the transmission array, the isolator including at least one conductive strip.

Abstract: An apparatus and method are provided for utilizing a component with a helical antenna for communicating radio frequency (RF) signals. Included is a housing and a component coupled to the housing. Further provided is a helical antenna coupled to the component. In use, the helical antenna serves to communicate RF signals.

Abstract: In a wireless communication device, an impedance matching circuit includes a first layered coil conductor one end of which is connected to a first I/O terminal, the first layered coil conductor includes loop conductors including a plurality of layers, and a second layered coil conductor one end of which is connected to the other end of the first layered coil conductor and the other end of which is respectively connected to a second I/O terminal, the second layered coil conductor includes loop conductors including a plurality of layers. On the surface of the wireless communication device, first and second terminal electrodes are connected via first and second in-plane conductors and first and second inter-layer conductors to any of the loop conductors of the first and second layered coil conductors.

Abstract: Bracket structures that structurally support and enhance the performance of millimeter-wave tapered-slot end-fire antennas for use in vehicular radar systems. The system includes a first longitudinal rib and a second longitudinal rib, each defining a first longitudinal slot and having a transmission end and a chip connection end. The system includes a crossbeam coupled to the first longitudinal rib and the second longitudinal rib. The system includes a first end-fire antenna having a transmission end that is received by the first longitudinal slot and a chip connection end. The first end-fire antenna is designed to transmit a first signal having a first phase. The system includes a second end-fire antenna having a transmission end that is received by the second longitudinal slot and a chip connection end. The second end-fire antenna is designed to transmit a second signal having a second phase that is different than the first phase.